South Korea's intelligence service on Sunday backed up Ukraine's account of having captured two wounded North Korean soldiers in Russia, after Kyiv said they were being questioned.

"Through various sources of information and intelligence, we assess that North Korean troops who have recently engaged in combat with Ukrainian forces have suffered around 1,100 casualties," the JCS said in a statement.

A North Korean soldier who was captured while fighting in Russia's war against Ukraine has died of his wounds, South Korea's spy agency said on Friday. "It has been confirmed through an allied intelligence agency that the North Korean soldier captured alive on December 26th has just passed away due to worsening wounds,

North Korea is gaining crucial military experience and equipment by sending troops to Russia, a U.S. official warned the United Nations, making the regime a growing threat to neighboring countries.

North Korean troops have been fighting with Russian forces in the war against Ukraine, with one Ukrainian commander detailing their "meat grinder strategy".

Pyongyang might have acquired advanced missile technology from Moscow in exchange for its involvement in the war, analysts say North Korea could raise its army's deployment to support Russia's war in Ukraine to as many as 100,

The president noted that Russian dictator Vladimir Putin is “not just maintaining his investments in aggression but doubling them.” Read also: Captured Russian marine exposes North Korean troop wipeout in Kursk Oblast - video “He has even started hiring soldiers from North Korea to continue this war.

As the war in Ukraine continues, countries involved in the conflict are facing significant losses. One of these nations is North Korea, which has sent soldiers to support Russia. The situation has been discussed recently by Ukrainian President Volodymyr Zelenskyy.